Tuck defends himself against criticism

The Giants haven’t been the same this year.  Coincidentally (or not), defensive end Justin Tuck hasn’t been the same. But Tuck disagrees with those who say he’s winding down. “Eli [Manning], he’s your main guy and he’s playing terrible,” NBC’s Rodney Harrison told the New York Times this week.  “On defense, Justin Tuck?  He’s on…